Improved friction-roller bearing



41\I0.w2,779, Y v PATENTBD MAY 1o,- 1870, y'

. c. M. DABoLL.

FRICTION ROLLER BEARING.

`@wird milie @wat Git-miur.

CHARLES M. DABOLL, OF NEW LONDON, CONNECTICUT.

Letter@ Parent No. 102,779, creamy 1o, 1810.

IMPRovED- rnrc'rroN-nontria sesame;

TheSche-dule referred to in these 'Letters Patent :risking part of the name.

To all persons to whom these presents may come Beit known that I, 'CHARLES M. DABOLL, of the city and county of New London and State of Connecticut, have invented a new and useful Improvement in the llanut'acture of Friction-roller Bushings 'or Bearings for Sheaves or othe:` Articies;.and I do hereby declare the same' to be fully described in the following specification and represented in the accompanying drawings, of which- Figure -Iis'a sideelev'ation, and

Figure 2,;altransverse sectionl ofa iiict iori-roller,. box or bearing provided with my improvement.

Figure 33s a `top view; Figure 4, a horizontal section; and

Figure 5,- a 'side elevationv ot' the set of 4frictionrollels and their'contractile frame.

Figure 6 is an'edge view of the frame as t'appears before being contracted -upon the'rollers.

The drawing eihihitsapseries of friction-rollers, A, their box B, and carrying frame C.' g

The box consists ot'- a hollow cylinder o'r tube provided with a fastening flange, a, and having a groove, b', out or formed in and around -the inner s urt'a'ce or periphery of the cylinder. i Into this groove the series of friction-rollers'. is extended and arranged 'and operate while in use,-they `being kept therein by means of theV frame O.

This frame, as I construct it, and asrepresented in the drawings, consists of two flat rings, bc, connected 'by-a series ot'l bars, (l.

ug putin place on a pivot of one of the rings so` that the opposite pivot of the other ring may be out ofy itsv socket in the roller. v The frame C is first -to be arranged within the box JB, after which the rollers should besuccessively introdnced intoboth, all of which having been properly accomplished, the flame C should be contracted so as to forceone of its rings toward the other, and thereby force all the pivots out 'of the sockets to enter them. This contraction of 'the' frame will cause each of its connection-bars to he bowed or lcurved in manner 'as represented in figs. .3, 4,-and 5.

Another mode in which I have application of the principle of my invention' is to luake either or each of the rings of the frame with series of corrugationatlexures, or arches, and to place apivot in and so vashto project from thehollov.r of each, and afterwards to' contract. each of the arches or exures, or flatten it so as to drive the pivots into the sockets of the rollers, or, instead of pivots, the bends may have holes in themto receive pivotsfor journals projected fromthe rollers.

, Heretofore, in making the rollerfcarrying frame, it has been customary to connect the rings by shouldered standards tenon'ed into each ring, the tenons going throughthe rings' and being: subsequently upset thereon, so as to rivet the standards to the rings, all

-of l which is not only au expensive proceedingl in comparison to that hereinheiore explained, but .renders the frame very liable to separate or become out of order while in use. v

-What I claim as, my invention is as follows, viz:- My improved mode of lxiug't-he friction-rollers in 'their box or ,beariugJra-me B, and to their pivots when such rollers are .in each box and frame, the

same consisting in contmctng't-he .carrying frame O upon and relatively to the series `of rollers A, so as to cause the pivots of one to enter their .sockets in the other, as described.

Also, the improved manufacture of friction-roller bearing, consisting of the series of rollers A,- their box B, and carrying fx1-.me C, having the latter contracted so'as to force the pivots of the next adjacent- 'ends ofthe series of rollers into their sockets, as explained.

CHARLES M. DABOLL.

Witnesses: l

R. H. Emir, S. N. PIPER.

'contemplated the i 

